search for: gdk_window_begin_paint_region

...dk_window_freeze_updates and schedule redraws myself with the lower priority. (This is equivalent to omitting step 3a above). It has the disadvantage of not doing updates immediately when a previously obscured region becomes visible again. 3) Turn off the widget's double buffering and doing the gdk_window_begin_paint_region() call manually after union'ing it with the to-be invalidated region. This is the solution I like best so far and will probably implement unless someone comes up with a better one. Cheers, Benjamin